2.4.[<=6] kernel has Cyrix 'coma' bug?

DISCUSSION Steven Lass 1 participant 1 message Jul 22, 2001 1 message not in the archive

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Steven Lass

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2001-07-22 17:22 UTC #1 lore raw

Rob,

My CPU is a bit different than yours (sorry for not posting this with the original message).

[root /root]# cat /proc/cpuinfo
processor : 0
vendor_id : CyrixInstead
cpu family : 4
model : 1
model name : MediaGX 3x Core/Bus Clock
stepping : 2
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : -1
wp : yes
flags :
bogomips : 59.59

I posted my .config file if anyone is interested. MTRR is not set.
http://members.home.net/stevenlass1/.config.txt

-steve

Quoted 51 lines

----- Original Message -----
From: "Rob Turk" <[email protected]>
Newsgroups: lists.linux.kernel
Sent: Sunday, July 22, 2001 4:23 PM
Subject: Re: 2.4.[<=6] kernel has Cyrix 'coma' bug?
Quoted 11 lines
"Steven Lass" <[email protected]> wrote in message news:[email protected]...
Quoted 6 lines
dev-list,
Every 2.4 kernel that I've tried freezes my Cyrix MediaGX system at boot up.
For what it's worth, I use the Slackware 8.0 distribution, and have no trouble running 2.4.[5-7] on my Cyrix MediaGX 233 MHz. Make sure MTTR is
off
Quoted 33 lines
in your configuration, this has bit me in the *ss once...
Rob
======
CPU: Before vendor init, caps: 00808131 01818131 00000000, vendor = 1 Working around Cyrix MediaGX virtual DMA bugs.
CPU: After vendor init, caps: 00808121 00818131 00000000 00000001
CPU:     After generic, caps: 00808121 00818131 00000000 00000001
CPU:             Common caps: 00808121 00818131 00000000 00000001
CPU: Cyrix MediaGXtm MMXtm Enhanced stepping 02
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
=======
robtu@pi8nos:/proc$ cat cpuinfo
processor       : 0
vendor_id       : CyrixInstead
cpu family      : 5
model           : 7
model name      : Cyrix MediaGXtm MMXtm Enhanced
stepping        : 2
cache size      : 16 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu msr cx8 cmov mmx cxmmx
bogomips        : 76.80